public ActionResult Reg(RegModel model, string ReturnUrl) { if (ModelState.IsValid) { string Result; if (model.Reg(out Result)) { if (!string.IsNullOrWhiteSpace(ReturnUrl)) { return(Redirect(ReturnUrl)); } else { return(RedirectToAction("Index", "Home")); } } else { ViewData["Result"] = Result; } } if (Request.IsAjaxRequest()) { return(PartialView("Reg")); } return(View()); }